
.d1{
    width: 400px;
    height:400px;
    background-color: white;
    margin: auto;
    border-radius: 50%;
    box-shadow:inset 50px 52px 100px 30px rgb(128,128,128);
}
.D2{
    margin: auto; 
    margin-top: 150px;
    margin-bottom: 0px;
    margin-left: 0px;
    margin-right:0px;
    display: flex;
    justify-content: center;
}
/* ui{
    
    list-style: none;
    margin: 0;
    padding: 0;
} */
li{
    font-size: 30px;
    font-family: "宋体";
    border-bottom: 1px solid black;
    border-top: 8px solid orange; 
    padding-left:50px;
    padding-right: 50px ;
    padding-bottom: 40px;
    padding-top: 40px;
    list-style: none;
    display: inline;
    float:left;
}
li:hover{
    background-color: rgb(128,128,128);
}
a{
    color: black;
}